// Copyright (C) 2024 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only #include #include #include #include #include QT_BEGIN_NAMESPACE /*! \class QPieSeries \inmodule QtGraphs \ingroup graphs_2D \brief The QPieSeries class presents data in pie graphs. A pie series consists of slices that are defined as QPieSlice objects. The slices can have any values as the QPieSeries object calculates the percentage of a slice compared with the sum of all slices in the series to determine the actual size of the slice in the graph. Pie size and position on the graph are controlled by using relative values that range from 0.0 to 1.0. These relate to the actual graph rectangle. By default, the pie is defined as a full pie. A partial pie can be created by setting a starting angle and angle span for the series. A full pie is 360 degrees, where 0 is at 12 a'clock. \sa QPieSlice */ /*! \qmltype PieSeries \nativetype QPieSeries \inqmlmodule QtGraphs \ingroup graphs_qml_2D \inherits AbstractSeries \brief Presents data in pie graphs. A pie series consists of slices that are defined using the PieSlice type. The slices can have any values as the PieSeries type calculates the percentage of a slice compared with the sum of all slices in the series to determine the actual size of the slice in the graph. Pie size and position on the graph are controlled by using relative values that range from 0.0 to 1.0. These relate to the actual graph rectangle. By default, the pie is defined as a full pie. A partial pie can be created by setting a starting angle and angle span for the series. A full pie is 360 degrees, where 0 is at 12 o'clock. The following QML example shows how to create a simple pie graph. \qml import QtQuick import QtGraphs Item { id: mainView width: 1280 height: 720 GraphsView { anchors.fill: parent theme: GraphsTheme { colorScheme: GraphsTheme.ColorScheme.Dark theme: GraphsTheme.Theme.QtGreen } PieSeries { id: pieSeries PieSlice { value: 1 } PieSlice { value: 2 } } } } \endqml \sa PieSlice, GraphsView */ /*! \property QPieSeries::horizontalPosition \brief The horizontal position of the pie. The value is relative to the graph rectangle, so that: \list \li 0.0 is the absolute left. \li 1.0 is the absolute right. \endlist The default value is 0.5 (center). \sa verticalPosition */ /*! \qmlproperty real PieSeries::horizontalPosition The horizontal position of the pie. The value is relative to the graph rectangle, so that: \list \li 0.0 is the absolute left. \li 1.0 is the absolute right. \endlist The default value is 0.5 (center). \sa verticalPosition */ /*! \qmlsignal PieSeries::horizontalPositionChanged() This signal is emitted when the horizontal position changes. \sa horizontalPosition */ /*! \property QPieSeries::verticalPosition \brief The vertical position of the pie. The value is relative to the graph rectangle, so that: \list \li 0.0 is the absolute top. \li 1.0 is the absolute bottom. \endlist The default value is 0.5 (center). \sa horizontalPosition */ /*! \qmlproperty real PieSeries::verticalPosition The vertical position of the pie. The value is relative to the graph rectangle, so that: \list \li 0.0 is the absolute top. \li 1.0 is the absolute bottom. \endlist The default value is 0.5 (center). \sa horizontalPosition */ /*! \qmlsignal PieSeries::verticalPositionChanged() This signal is emitted when the vertical position changes. \sa verticalPosition */ /*! \property QPieSeries::pieSize \brief The pie size. The value is relative to the graph rectangle, so that: \list \li 0.0 is the minimum pieSize (pie not drawn). \li 1.0 is the maximum pieSize that can fit the graph. \endlist When setting this property, the holeSize property is adjusted if necessary, to ensure that the hole size is not greater than the pie size. The default value is 0.7. */ /*! \qmlproperty real PieSeries::pieSize The pie size. The value is relative to the graph rectangle, so that: \list \li 0.0 is the minimum pieSize (pie not drawn). \li 1.0 is the maximum pieSize that can fit the graph. \endlist When setting this property, the holeSize property is adjusted if necessary, to ensure that the hole size is not greater than the pie size. The default value is 0.7. */ /*! \qmlsignal PieSeries::pieSizeChanged() This signal is emitted when the pie size changes. \sa pieSize */ /*! \property QPieSeries::holeSize \brief The donut hole size. When setting the \l pieSize property, this property is adjusted if necessary, to ensure that the hole size is not greater than the pie size. The default value is 0.0. */ /*! \qmlproperty real PieSeries::holeSize The donut hole size. When setting the \l pieSize property, this property is adjusted if necessary, to ensure that the hole size is not greater than the pie size. The default value is 0.0. */ /*! \qmlsignal PieSeries::holeSizeChanged() This signal is emitted when the donut hole size changes. \sa holeSize */ /*! \property QPieSeries::startAngle \brief The starting angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. The default value is 0. */ /*! \qmlproperty real PieSeries::startAngle The starting angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. The default value is 0. */ /*! \qmlsignal PieSeries::startAngleChanged() This signal is emitted when the pie start angle changes. \sa startAngle */ /*! \property QPieSeries::endAngle \brief The ending angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. The default value is 360. */ /*! \qmlproperty real PieSeries::endAngle The ending angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. The default value is 360. */ /*! \qmlsignal PieSeries::endAngleChanged() This signal is emitted when the pie end angle changes. \sa endAngle */ /*! \property QPieSeries::count \brief The number of slices in the series. */ /*! \qmlproperty int PieSeries::count The number of slices in the series. */ /*! \qmlsignal PieSeries::countChanged() This signal is emitted when the slice count changes. \sa count */ /*! \property QPieSeries::sum \brief The sum of all slices. The series keeps track of the sum of all the slices it holds. */ /*! \qmlproperty real PieSeries::sum The sum of all slices. The series keeps track of the sum of all the slices it holds. */ /*! \property QPieSeries::angleSpanVisibleLimit \since 6.10 \brief The angle span limit for label visibility. The angle span that will be used as the visibility limit for a slice label. A slice with angle span under this value will change its visibility based on the \l angleSpanVisibleMode set to the series. The default value is \c {0}, which means no slices will be hidden regardless of the \l {angleSpanVisibleMode}. \sa QPieSeries::angleSpanVisibleMode */ /*! \qmlproperty real PieSeries::angleSpanVisibleLimit \since 6.10 The angle span limit for label visibility. The angle span that will be used as the visibility limit for a slice label. A slice with angle span under this value will change its visibility based on the \l angleSpanVisibleMode set to the series. The default value is \c {0}, which means no slices will be hidden regardless of the \l {angleSpanVisibleMode}. \sa angleSpanVisibleMode */ /*! \property QPieSeries::angleSpanVisibleMode \since 6.10 \brief The mode for label visibility. The mode which determines which labels will be hidden if they are under the angle span limit set with \l {angleSpanVisibleLimit}. Has no effect if \l angleSpanVisibleLimit has not been set. \sa QPieSeries::angleSpanVisibleLimit */ /*! \qmlproperty enumeration PieSeries::angleSpanVisibleMode \since 6.10 The mode for label visibility. The mode which determines which labels will be hidden if they are under the angle span limit set with \l {angleSpanVisibleLimit}. Has no effect if \l angleSpanVisibleLimit has not been set. \value PieSeries.VisibleMode.None All of the labels of slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden. \value PieSeries.VisibleMode.First All except the first label of consecutive slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden. This is the default value. \value PieSeries.VisibleMode.Even Every other label of consecutive slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden, starting from the second one. \value PieSeries.VisibleMode.Odd Every other label of consecutive slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden, starting from the first one. \sa angleSpanVisibleLimit */ /*! \enum QPieSeries::VisibleMode \since 6.10 The mode for label visibility. \value None All of the labels of slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden. \value First All except the first label of consecutive slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden. This is the default value. \value Even Every other label of consecutive slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden, starting from the second one. \value Odd Every other label of consecutive slices with smaller angle span than the \l angleSpanVisibleLimit will be hidden, starting from the first one. \sa QPieSeries::angleSpanVisibleLimit */ /*! \qmlsignal PieSeries::sumChanged() This signal is emitted when the sum of all slices changes. \sa sum */ /*! \fn void QPieSeries::added(const QList &slices) This signal is emitted when the slices specified by \a slices are added to the series. \sa append() */ /*! \qmlsignal PieSeries::added(list slices) This signal is emitted when the slices specified by \a slices are added to the series. */ /*! \fn void QPieSeries::removed(const QList &slices) This signal is emitted when the slices specified by \a slices are removed from the series. \sa remove() */ /*! \qmlsignal PieSeries::removed(list slices) This signal is emitted when the slices specified by \a slices are removed from the series. */ /*! \qmlmethod PieSlice PieSeries::at(int index) Returns the slice at the position specified by \a index. Returns null if the index is not valid. */ /*! \qmlmethod PieSlice PieSeries::find(string label) Returns the first slice that has the label \a label. Returns null if the label is not found. */ /*! \qmlmethod PieSlice PieSeries::append(string label, real value) Adds a new slice with the label \a label and the value \a value to the pie. */ /*! \qmlmethod bool PieSeries::remove(PieSlice slice) Removes the slice specified by \a slice from the pie. Returns \c true if the removal was successful, \c false otherwise. */ /*! \qmlmethod bool PieSeries::replace(int index, PieSlice slice) Replaces the slice specified by \a slice from the pie at \a index. Returns \c true if the replace was successful, \c false otherwise. */ /*! \qmlmethod PieSeries::clear() Removes all slices from the pie. */ /*! \qmlmethod void PieSeries::removeMultiple(int index, int count) Removes a range of slices as specified by the \a index and \a count. The call traverses over all slices even if removal of one fails. */ /*! \qmlmethod bool PieSeries::remove(int index) Removes the slice specified by \a index from the pie. Returns \c true if the removal was successful, \c false otherwise. */ /*! \qmlmethod bool PieSeries::replace(PieSlice oldSlice, PieSlice newSlice) Replaces the slice specified by \a oldSlice with newSlice. Returns \c true if the removal was successful, \c false otherwise. \a oldSlice is destroyed if this is successful. */ /*! \qmlmethod bool PieSeries::replace(list slices) Completely replaces all current slices with \a slices. The size does not need to match. Returns false if any of the PieSlice in \a slices is invalid. */ /*! \qmlmethod bool PieSeries::take(PieSlice slice) Takes a single slice, specified by \a slice, from the series. Does not delete the slice object. Returns \c true if successful. */ /*! \qmlsignal PieSeries::clicked(PieSlice slice) This signal is emitted when the \a slice is clicked or tapped. */ /*! \qmlsignal PieSeries::doubleClicked(PieSlice slice) This signal is emitted when the \a slice is double-clicked or double-tapped. This signal always occurs after \l clicked. */ /*! \qmlsignal PieSeries::pressed(PieSlice slice) This signal is emitted when the user clicks or taps the \a slice and holds down the mouse button or gesture. */ /*! \qmlsignal PieSeries::released(PieSlice slice) This signal is emitted when the user releases a previously pressed mouse button or gesture on the \a slice. */ /*! \qmlsignal PieSeries::angleSpanVisibleLimitChanged() \since 6.10 This signal is emitted when the angle span limit has been changed. */ /*! \qmlsignal PieSeries::angleSpanVisibleModeChanged() \since 6.10 This signal is emitted when the angle span limit visible mode has been changed. */ /*! Constructs a series object that is a child of \a parent. */ QPieSeries::QPieSeries(QObject *parent) : QAbstractSeries(*(new QPieSeriesPrivate()), parent) {} QPieSeries::~QPieSeries() {} /*! \reimp Returns the type of the series. */ QAbstractSeries::SeriesType QPieSeries::type() const { return QAbstractSeries::SeriesType::Pie; } /*! Returns the PieSlice at the position \a index. Returns null if no PieSlice was found. */ QPieSlice *QPieSeries::at(qsizetype index) { QList sliceList = slices(); if (index >= 0 && index < sliceList.size()) return sliceList[index]; return 0; } /*! Searches for a PieSlice which contains the label \a label. Returns the PieSlice if found, null otherwise. */ QPieSlice *QPieSeries::find(const QString &label) { for (QPieSlice *slice : slices()) { if (slice->label() == label) return slice; } return 0; } /*! Replaces the PieSlice at position \a index with the one specified by \a slice. The original PieSlice will be permanently deleted. Returns \c false if replacing any of the PieSlices fails. */ bool QPieSeries::replace(qsizetype index, QPieSlice *slice) { Q_D(QPieSeries); if (index < 0) index = 0; if (!slice || d->m_slices.contains(slice)) return false; if (slice->series()) // already added to some series return false; if (qIsNaN(slice->value()) || qIsInf(slice->value())) return false; if (d->m_slices.size() <= index) return false; emit removed(QList() << d->m_slices[index]); delete d->m_slices[index]; slice->setParent(this); slice->d_func()->m_series = this; d->m_slices[index] = slice; d->updateData(); QObject::connect(slice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange())); emit replaced(QList() << slice); return true; } /*! Removes multiple PieSlices from the series starting from \a index to a number of \a count. The PieSlices will be permanently deleted. */ void QPieSeries::removeMultiple(qsizetype index, int count) { Q_D(QPieSeries); if (index < 0 || count < 1 || index + count > d->m_slices.size()) return; QList removedList; for (qsizetype i = index; i < index + count; ++i) { auto slice = d->m_slices[index]; d->m_slices.removeOne(slice); d->updateData(); removedList << slice; } emit removed(removedList); for (auto slice : std::as_const(removedList)) { delete slice; } emit countChanged(); } /*! Removes the PieSlice at the location \a index. The PieSlice will be permanently deleted. Returns \c true if removing is successful. */ bool QPieSeries::remove(qsizetype index) { Q_D(QPieSeries); if (index >= d->m_slices.size()) return false; if (index < 0) return false; return remove(d->m_slices[index]); } /*! Replaces the PieSlice \a oldSlice with \a newSlice if found in the series.\a oldSlice will be permanently deleted. Returns \c true if replacing is successful. */ bool QPieSeries::replace(QPieSlice *oldSlice, QPieSlice *newSlice) { Q_D(QPieSeries); if (!oldSlice || !newSlice) return false; if (oldSlice == newSlice) return false; if (d->m_slices.contains(newSlice)) return false; if (newSlice->series()) return false; if (qIsNaN(newSlice->value()) || qIsInf(newSlice->value())) return false; for (int i = 0; i < d->m_slices.size(); ++i) { if (d->m_slices[i] == oldSlice) { emit removed(QList() << d->m_slices[i]); delete d->m_slices[i]; newSlice->setParent(this); newSlice->d_func()->m_series = this; d->m_slices[i] = newSlice; d->updateData(); QObject::connect(newSlice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange())); emit replaced(QList() << newSlice); return true; } } return false; } /*! Replaces the entire list of PieSlices in the series with the list specified by \a slices. All the original PieSlices will be permanently deleted. Returns \c true if all PieSlices are replaced successfully. */ bool QPieSeries::replace(const QList &slices) { Q_D(QPieSeries); for (const auto slice : slices) { if (!slice || d->m_slices.contains(slice)) return false; if (slice->series()) return false; if (qIsNaN(slice->value()) || qIsInf(slice->value())) return false; } emit removed(d->m_slices); for (auto &slice : d->m_slices) { delete slice; slice = nullptr; } for (auto &slice : slices) { slice->setParent(this); slice->d_func()->m_series = this; QObject::connect(slice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange())); } d->m_slices = slices; emit replaced(slices); return true; } /*! Appends the slice specified by \a slice to the series. Slice ownership is passed to the series. Returns \c true if appending succeeds. */ bool QPieSeries::append(QPieSlice *slice) { return append(QList() << slice); } /*! Appends the array of slices specified by \a slices to the series. Slice ownership is passed to the series. Returns \c true if appending succeeds. */ bool QPieSeries::append(const QList &slices) { Q_D(QPieSeries); if (slices.size() == 0) return false; for (auto *s : slices) { if (!s || d->m_slices.contains(s)) return false; if (s->series()) // already added to some series return false; if (qIsNaN(s->value()) || qIsInf(s->value())) return false; } for (auto *s : slices) { s->setParent(this); s->d_func()->m_series = this; d->m_slices << s; } d->updateData(); for (auto *s : slices) QObject::connect(s, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange())); emit added(slices); emit countChanged(); return true; } /*! Appends the slice specified by \a slice to the series and returns a reference to the series. Slice ownership is passed to the series. */ QPieSeries &QPieSeries::operator << (QPieSlice *slice) { append(slice); return *this; } /*! Appends a single slice with the specified \a value and \a label to the series. Slice ownership is passed to the series. Returns null if \a value is \c NaN, \c Inf, or \c -Inf and adds nothing to the series. */ QPieSlice *QPieSeries::append(const QString &label, qreal value) { if (!(qIsNaN(value) || qIsInf(value))) { QPieSlice *slice = new QPieSlice(label, value); append(slice); return slice; } else { return nullptr; } } /*! Inserts the slice specified by \a slice to the series before the slice at the position specified by \a index. Slice ownership is passed to the series. Returns \c true if inserting succeeds. */ bool QPieSeries::insert(qsizetype index, QPieSlice *slice) { Q_D(QPieSeries); if (index < 0 || index > d->m_slices.size()) return false; if (!slice || d->m_slices.contains(slice)) return false; if (slice->series()) // already added to some series return false; if (qIsNaN(slice->value()) || qIsInf(slice->value())) return false; slice->setParent(this); slice->d_func()->m_series = this; d->m_slices.insert(index, slice); d->updateData(); connect(slice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange())); emit added(QList() << slice); emit countChanged(); return true; } /*! Removes a single slice, specified by \a slice, from the series and deletes it permanently. The pointer cannot be referenced after this call. Returns \c true if the removal succeeds. */ bool QPieSeries::remove(QPieSlice *slice) { Q_D(QPieSeries); if (!d->m_slices.removeOne(slice)) return false; d->updateData(); emit removed(QList() << slice); emit countChanged(); delete slice; slice = 0; return true; } /*! Takes a single slice, specified by \a slice, from the series. Does not delete the slice object. \note The series remains the slice's parent object. You must set the parent object to take full ownership. Returns \c true if the take operation was successful. */ bool QPieSeries::take(QPieSlice *slice) { Q_D(QPieSeries); if (!d->m_slices.removeOne(slice)) return false; slice->d_func()->m_series = 0; slice->disconnect(this); d->updateData(); emit removed(QList() << slice); emit countChanged(); return true; } /*! Clears all slices from the series. */ void QPieSeries::clear() { Q_D(QPieSeries); if (d->m_slices.size() == 0) return; QList slices = d->m_slices; for (QPieSlice *s : std::as_const(d->m_slices)) d->m_slices.removeOne(s); d->updateData(); emit removed(slices); emit countChanged(); for (QPieSlice *s : std::as_const(slices)) delete s; } /*! Returns a list of slices that belong to this series. */ QList QPieSeries::slices() const { Q_D(const QPieSeries); return d->m_slices; } /*! Returns the number of the slices in this series. */ qsizetype QPieSeries::count() const { Q_D(const QPieSeries); return d->m_slices.size(); } /*! Returns \c true if the series is empty. */ bool QPieSeries::isEmpty() const { Q_D(const QPieSeries); return d->m_slices.isEmpty(); } /*! Returns the sum of all slice values in this series. \sa QPieSlice::value(), QPieSlice::setValue(), QPieSlice::percentage() */ qreal QPieSeries::sum() const { Q_D(const QPieSeries); return d->m_sum; } void QPieSeries::setHorizontalPosition(qreal relativePosition) { Q_D(QPieSeries); if (relativePosition < 0.0) relativePosition = 0.0; if (relativePosition > 1.0) relativePosition = 1.0; if (qFuzzyCompare(d->m_pieRelativeHorPos, relativePosition)) { qCDebug(lcProperties2D, "QPieSeries::setHorizontalPosition. Position is already set to: %f", relativePosition); return; } d->m_pieRelativeHorPos = relativePosition; emit horizontalPositionChanged(); emit update(); } qreal QPieSeries::horizontalPosition() const { Q_D(const QPieSeries); return d->m_pieRelativeHorPos; } void QPieSeries::setVerticalPosition(qreal relativePosition) { Q_D(QPieSeries); if (relativePosition < 0.0) relativePosition = 0.0; if (relativePosition > 1.0) relativePosition = 1.0; if (qFuzzyCompare(d->m_pieRelativeVerPos, relativePosition)) { qCDebug(lcProperties2D, "QPieSeries::setVerticalPosition. Position is already set to: %f", relativePosition); return; } d->m_pieRelativeVerPos = relativePosition; emit verticalPositionChanged(); emit update(); } qreal QPieSeries::verticalPosition() const { Q_D(const QPieSeries); return d->m_pieRelativeVerPos; } void QPieSeries::setPieSize(qreal relativeSize) { Q_D(QPieSeries); relativeSize = qBound((qreal)0.0, relativeSize, (qreal)1.0); d->setSizes(qMin(d->m_holeRelativeSize, relativeSize), relativeSize); } qreal QPieSeries::pieSize() const { Q_D(const QPieSeries); return d->m_pieRelativeSize; } /*! Sets the start angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. \a angle must be smaller than the end angle. \sa startAngle(), endAngle(), setEndAngle() */ void QPieSeries::setStartAngle(qreal angle) { Q_D(QPieSeries); if (qFuzzyCompare(d->m_pieStartAngle, angle)) { qCDebug(lcSeries2D, "QPieSeries::setStartAngle. Angle is already set to: %f", angle); return; } d->m_pieStartAngle = angle; d->updateData(); emit startAngleChanged(); emit update(); } /*! Returns the start angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. \sa setStartAngle(), endAngle(), setEndAngle() */ qreal QPieSeries::startAngle() const { Q_D(const QPieSeries); return d->m_pieStartAngle; } /*! Sets the end angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. \a angle must be greater than the start angle. \sa endAngle(), startAngle(), setStartAngle() */ void QPieSeries::setEndAngle(qreal angle) { Q_D(QPieSeries); if (qFuzzyCompare(d->m_pieEndAngle, angle)) { qCDebug(lcSeries2D, "QPieSeries::setEndAngle. Angle is already set to: %f", angle); return; } d->m_pieEndAngle = angle; d->updateData(); emit endAngleChanged(); emit update(); } /*! Returns the end angle of the pie. A full pie is 360 degrees, where 0 degrees is at 12 o'clock. \sa setEndAngle(), startAngle(), setStartAngle() */ qreal QPieSeries::endAngle() const { Q_D(const QPieSeries); return d->m_pieEndAngle; } void QPieSeries::componentComplete() { for (QObject *child : children()) { if (qobject_cast(child)) { QPieSeries::append(qobject_cast(child)); qCDebug(lcSeries2D) << "append slice: " << child << "to pieSeries"; } } qCDebug(lcEvents2D, "QPieSeries::componentComplete."); QAbstractSeries::componentComplete(); } /*! Sets the visibility of all slice labels to \a visible. \note This function affects only the current slices in the series. If a new slice is added, the default label visibility is \c false. \sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible() */ void QPieSeries::setLabelsVisible(bool visible) { Q_D(QPieSeries); for (QPieSlice *s : std::as_const(d->m_slices)) s->setLabelVisible(visible); } /*! Sets the position of all the slice labels to \a position. \note This function affects only the current slices in the series. If a new slice is added, the default label position is QPieSlice::LabelOutside. \sa QPieSlice::labelPosition(), QPieSlice::setLabelPosition() */ void QPieSeries::setLabelsPosition(QPieSlice::LabelPosition position) { Q_D(QPieSeries); for (QPieSlice *s : std::as_const(d->m_slices)) s->setLabelPosition(position); } void QPieSeries::handleSliceChange() { QPieSlice *pSlice = qobject_cast(sender()); Q_D(QPieSeries); Q_ASSERT(d->m_slices.contains(pSlice)); d->updateData(); } QPieSeries::QPieSeries(QPieSeriesPrivate &dd, QObject *parent) : QAbstractSeries(dd, parent) {} void QPieSeries::setHoleSize(qreal holeSize) { Q_D(QPieSeries); holeSize = qBound((qreal)0.0, holeSize, (qreal)1.0); d->setSizes(holeSize, qMax(d->m_pieRelativeSize, holeSize)); } qreal QPieSeries::holeSize() const { Q_D(const QPieSeries); return d->m_holeRelativeSize; } qreal QPieSeries::angleSpanVisibleLimit() const { Q_D(const QPieSeries); return d->m_angleSpanVisibleLimit; } void QPieSeries::setAngleSpanVisibleLimit(qreal newAngleSpanVisibleLimit) { Q_D(QPieSeries); if (qFuzzyCompare(d->m_angleSpanVisibleLimit, newAngleSpanVisibleLimit)) { qCDebug(lcProperties2D, "QPieSeries::setAngleSpanVisibleLimit. Limit is already set to: %f", newAngleSpanVisibleLimit); return; } d->m_angleSpanVisibleLimit = newAngleSpanVisibleLimit; d->updateData(true); emit angleSpanVisibleLimitChanged(); } QPieSeries::VisibleMode QPieSeries::angleSpanVisibleMode() const { Q_D(const QPieSeries); return d->m_angleSpanVisibleMode; } void QPieSeries::setAngleSpanVisibleMode(QPieSeries::VisibleMode newAngleSpanVisibleMode) { Q_D(QPieSeries); if (d->m_angleSpanVisibleMode == newAngleSpanVisibleMode) { qCDebug(lcProperties2D) << "QPieSeries::setAngleSpanVisibleMode. Mode is already set to: " << newAngleSpanVisibleMode; return; } d->m_angleSpanVisibleMode = newAngleSpanVisibleMode; d->updateData(true); emit angleSpanVisibleModeChanged(); } QPieSeriesPrivate::QPieSeriesPrivate() : m_pieRelativeHorPos(.5) , m_pieRelativeVerPos(.5) , m_pieRelativeSize(.7) , m_pieStartAngle(0) , m_pieEndAngle(360) , m_sum(0) , m_holeRelativeSize(.0) , m_angleSpanVisibleLimit(.0) , m_angleSpanVisibleMode(QPieSeries::VisibleMode::First) {} void QPieSeriesPrivate::updateData(bool clearHidden) { Q_Q(QPieSeries); // calculate sum of all slices qreal sum = 0; for (QPieSlice *s : std::as_const(m_slices)) sum += s->value(); if (!qFuzzyCompare(m_sum, sum)) { m_sum = sum; emit q->sumChanged(); } // nothing to show.. if (qFuzzyCompare(m_sum, 0)) return; // update slice attributes qreal sliceAngle = m_pieStartAngle; qreal pieSpan = m_pieEndAngle - m_pieStartAngle; auto hideMode = q->angleSpanVisibleMode(); bool hideNextSmallSlice = false; for (QPieSlice *s : std::as_const(m_slices)) { QPieSlicePrivate *d = s->d_func(); d->setPercentage(s->value() / m_sum); d->setStartAngle(sliceAngle); d->setAngleSpan(pieSpan * s->percentage()); sliceAngle += s->angleSpan(); // Reset hidden status if (clearHidden) { d->m_hideLabel = false; d->setLabelVisible(true); } // Check if current slice is small, and if the previous slice was also small // Hide the label on this one if the mode matches if (d->m_angleSpan < m_angleSpanVisibleLimit && ((!hideNextSmallSlice && hideMode == QPieSeries::VisibleMode::Even) || (hideNextSmallSlice && (hideMode == QPieSeries::VisibleMode::Odd || hideMode == QPieSeries::VisibleMode::First)) || hideMode == QPieSeries::VisibleMode::None)) { d->setLabelVisible(false, true); } if (hideMode == QPieSeries::VisibleMode::First) { // Hide every other small slice label after the first shown one hideNextSmallSlice = d->m_angleSpan < m_angleSpanVisibleLimit; } else { // Hide only every other odd/even small slice label hideNextSmallSlice = (!hideNextSmallSlice && d->m_angleSpan < m_angleSpanVisibleLimit); } } emit q->update(); } void QPieSeriesPrivate::updateLabels() { Q_Q(QPieSeries); emit q->update(); } void QPieSeriesPrivate::setSizes(qreal innerSize, qreal outerSize) { Q_Q(QPieSeries); if (!qFuzzyCompare(m_holeRelativeSize, innerSize)) { m_holeRelativeSize = innerSize; emit q->holeSizeChanged(); } else { qCDebug(lcProperties2D, "QPieSeries::setSizes. Inner size is already set to: %f", innerSize); } if (!qFuzzyCompare(m_pieRelativeSize, outerSize)) { m_pieRelativeSize = outerSize; emit q->pieSizeChanged(); } else { qCDebug(lcProperties2D, "QPieSeries::setSizes. Outer size is already set to: %f", outerSize); } } QT_END_NAMESPACE